Welcome to the Nonindigenous Aquatic Species (NAS) information resource for the United
States Geological Survey. Located at Gainesville, Florida, this site
has been established as a central repository for spatially referenced
biogeographic accounts of introduced aquatic species. The program provides scientific
reports, online/realtime queries, spatial data sets, regional contact lists, and general
information. The data are made available for use by biologists, interagency groups, and the
general public. The geographical coverage is the United States.

Disclaimer:

The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Contact us if you are using data from this site for a publication to make sure the data are being used appropriately and for potential co-authorship if warranted. For queries involving fish, please contact Pam Fuller. For queries involving invertebrates, contact Amy Benson.